Prevost Female Unvalved Coupler
Price range: $28.71 through $34.64
- Description
- Additional information
- Dimensions
Description
Prevost ELS Series Female Unvalved Water Coupler
The Prevost ELS Series Female Unvalved Coupler is a high-performance, “straight-through” connection solution designed for industrial water systems where maximum flow volume is the top priority. Unlike standard valved couplings that restrict flow to provide an automatic shut-off, the unvalved version offers an unobstructed internal path, making it the perfect choice for high-demand rinsing, filling, and cooling applications.
Built with Prevost’s signature chrome-plated brass, this coupler combines rugged industrial durability with a sleek, hygienic finish.
Key Features & Benefits
- Maximum Flow (Straight-Through): By removing the internal valve mechanism, this coupler allows for a higher flow rate with zero internal resistance, ensuring your equipment operates at its full potential.
- Corrosion-Resistant Construction: The high-grade chrome-plated brass body provides exceptional protection against oxidation, scale buildup, and harsh cleaning chemicals.
- Low Pressure Drop: The wide-bore 9mm profile ensures that water pressure remains consistent from the source to the tool, which is critical for high-volume wash-down tasks.
- Heavy-Duty Internal Seals: Equipped with high-performance NBR (Nitrile) seals that provide a drip-free connection even under constant vibration or mechanical stress.
- Modular Versatility: The female BSPP (G) threads allow for direct mounting onto pipes, manifolds, or rigid equipment outlets, creating a permanent quick-connect station.
Technical Specifications
| Feature | Specification |
| Type | Unvalved (Straight-Through / Non-Sealing) |
| Internal Diameter | 9 mm |
| Body Material | Chrome-plated Brass |
| Max Operating Pressure | 10 bar (145 PSI) |
| Temperature Range | 5 to 140 °F |
| Thread Size | Available in G 1/4″, G 3/8″, and G 1/2″ Female |
| Compatibility | Pairs with all Prevost ELP Series Water Plugs |
Critical Usage Note: Unvalved vs. Valved
Important: Because this is an unvalved coupler, water will flow freely from the coupler as soon as the water source is turned on, even if no plug is connected. It is best used in systems where a separate shut-off valve is located upstream, or where continuous flow is required (such as machinery cooling lines).
Ideal Applications
- Industrial Cooling: Supplying continuous water flow to injection molds, welding equipment, or heat exchangers.
- High-Volume Filling: Ideal for quickly filling large vats, tanks, or containers in food processing plants.
- Agriculture & Greenhouses: Connecting main water lines to irrigation manifolds where maximum volume is required.
- Marine & Boat Wash-down: Durable enough to withstand salt-air environments and high-pressure hose use.
Additional information
| Thread | 3/4 FGHT, 3/4 FNPT, 3/4 FGHT Retail, 3/4 FNPT Retail |
|---|---|
| Product Range | ELS for Water |
| A (inch) | B (inch) | C (mm) | Reference |
|---|---|---|---|
| 2.402 | 1.378 | 30 | ELS 090204 |
| 2.402 | 1.378 | 30 | ELS 090304 |



















